Question

Explain any three conditions that is

required for a chemical reaction to take

place. Give example​

Answer 1

Close contact : Na+H2O=NaOH+H2O

Solution:AgNo3+NaCl=Agcl+NaNo3

Heat:Cuco3=Cuo+CO2

Light : 6Co2+6H2O=C6H12O6+6H2O

Electricity:2NaCl=2Na+Cl2

Pressure:N2+3H2=2NH3

Catalyst:2KCIO3=2KCI+3O2

Answer 2

Conditions that are required for a chemical reaction are close contact, heat, light, pressure, and catalyst.

Explanation:

• When a substance comes in close contact with another matter it began to react. When sodium comes into contact with water, it immediately forms sodium hydroxide and water.

              $Na+H_2O\rightarrow NaOH+H_2O$

• Reactions that take place only under a certain temperatures. When heat is supplied to the reactants they go under reaction as heat also increases the rate of the chemical reaction.

             $Cu+conc.2H_2SO_4\;\xrightarrow\triangle\;CuSO_4+2H_2O$

• A certain amount of pressure is necessary for them to conduct the reaction. When sulphur and potassium chlorate are mixed together and placed under high pressure, they explode loudly. Similarly, nitrogen reacts with hydrogen under high pressure to give ammonia gas.

             $\underset{\left(1\;vol\right)}{N_2}+\underset{\left(3\;vol\right)}{3H_2}\;\xrightarrow[{500^oC,Fe\;and\;Mo}]{200-900\;atm}\;\underset{\left(2\;vols\right)}{2NH_3}$